Go with a Sherwood. I had one on my old boat and it was awesome - worked perfectly for the entire twenty years. I just bought one to install on my '06 X30. I got mine from Overton's website - ordered it on Tuesday and it was on my doorstep Thursday afternoon. Free shipping.

I have seen small bugs, twigs, etc in the screen. Is it going to harm the engine to let those things through? Good question. Bugs probably go through easily... Sticks on the other hand probably don't do the impeller blades any good.

Our lake is fairly clean. If you're on a dirty lake, I would certainly use one.